NCIS (Naval Criminal Investigative Service) is an action drama, about a team of special agents whose mission is to investigate any crime that has a shred of evidence connected to Navy and Marine Corps personnel, regardless of rank or position. Leading this team that operates outside of the military chain of command is NCIS Special Agent Leroy Jethro Gibbs, a highly-skilled investigator and interrogator who is smart, tough and willing to bend the rules to get the job done. Working under Gibbs is Special Agent Anthony DiNozzo a former Homicide Detective who has instincts that come only from working on the streets. Joining them are Agent Kate Todd, a beautiful, tough former Secret Service Agent who has gone head-to-head with Gibbs in the past. She is killed on the last episode of season 2. Kate is replaced by Officer Ziva David a beautiful Mossad Agent. In season 2 there is a new member in Gibbs his team Special Agent Timothy McGee , a graduate of MIT whose computer skills earned him a spot on Gibb's team as a probationary Field Agent.